.child-view {
  position: absolute;
  left: 0;
  top: 46px;
  width: 100%;
  height: 100%;
  transition: all .5s cubic-bezier(.55,0,.1,1);
}
.child-view-no-top {
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  transition: all .5s cubic-bezier(.55,0,.1,1);
}
.fade-enter-active, .fade-leave-active {
  transition: opacity .5s;
}
.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
}
